Irwin Industrial Tool Co 49911 Solid Center Auger Bit

Product Description

The IRWIN INDUSTRIAL TOOL CO 49911 is a solid center auger bit designed for boring clean, accurate holes in wood. Built on the I-100 platform, it features a 11/16 inch diameter, a 4.5 inch twist length, and a 7.5 inch overall length. The solid center construction provides extra rigidity during boring, reducing deflection under load. Full-length heat treatment strengthens the twist along the entire shaft, which is especially important where strain is greatest during heavy-duty applications. This bit is packaged individually and sold in a package quantity of 6 units per order.

This auger bit is suited for residential and light commercial carpentry, rough framing, and general woodworking applications where clean, straight holes are required in hard or soft wood. The coarse screw point pulls the bit into the material quickly, reducing the force needed to advance the bit. Wide lands keep the bit aligned as it travels through the workpiece, minimizing drift. It is a practical choice for electricians, plumbers, and carpenters who drill through framing members during rough-in work.

Key Features

• Solid center design provides extra rigidity and reduces flex while boring
• Full-length heat-treated bit resists bending in heavy-duty applications
• Wide lands keep the bit tracking straight through the full depth of the hole
• Flutes ground behind the lands channel chips inward and away from the outside diameter for a faster, cleaner cut
• Single spur cutting edge scribes the hole circumference for a smoother finish
• Coarse screw point enables fast boring in both hard and soft woods

Compatibility

Designed as an OEM-style replacement or standard-stock auger bit for use with standard brace-style bit holders and compatible low-speed drill drivers accepting auger bit shanks.

Installation Notes

This bit is installed and operated by carpenters, electricians, and plumbers during rough-in drilling through wood framing. Ensure the bit is fully seated and secured in the chuck or brace before operation. Always wear appropriate eye protection when boring, as chips are channeled inward but debris can still be expelled. Do not apply excessive side-load pressure, which can stress the shank even on heat-treated bits.